Dorman 524-311 Suspension Control Arm and Ball Joint Assembly - Front Left Lower Rearward

Overview of Dorman Suspension Control Arm and Ball Joint Assembly

The Dorman 524-311 suspension control arm and ball joint assembly is designed for select Mercedes-Benz models, including the C230, C250, C300, C350, E350, and E400. This assembly combines a durable steel control arm with a pre-installed ball joint to restore proper suspension function and vehicle handling.

• Pre-greased ball joint for immediate use
• Includes rubber bushings for vibration dampening
• Steel construction with casting/forged control arm type
• Press-in ball joint with threaded stud (14 mm thread diameter)
• Compatible with Mercedes-Benz C and E-Class models
• Mounting hardware included for straightforward installation
• Control arm dimensions: maximum length 237 mm, maximum width 288.5 mm
• Black finish for corrosion resistance

Detailed Product Description

The Dorman 524-311 suspension control arm and ball joint assembly is engineered to meet the suspension needs of various Mercedes-Benz vehicles, specifically the C230, C250, C300, C350, E350, and E400 models. Constructed from durable steel with a casting/forged design, this control arm offers strength and reliability. The assembly comes pre-greased, eliminating the need for additional lubrication during installation. Rubber bushings are included to reduce noise and absorb road vibrations, enhancing ride comfort.

The ball joint is press-in mounted and features a threaded stud with a 14 mm thread diameter, ensuring secure attachment and compatibility with the vehicle’s suspension system. The control arm is finished in black to resist corrosion and maintain structural integrity over time. With one mounting hole measuring 12.3 mm in diameter, the assembly is designed for precise fitment and alignment.

Common Applications and Problem Resolution

• Restores proper suspension geometry and alignment
• Eliminates clunking or knocking noises from worn control arms or ball joints
• Improves steering response and vehicle handling
• Reduces uneven tire wear caused by suspension component failure
• Addresses vibration and instability issues during driving

Installation Notes and Tips

Installation of the Dorman 524-311 suspension control arm and ball joint assembly requires basic suspension knowledge and appropriate tools. Since the ball joint is pre-installed and pre-greased, no additional lubrication is necessary. Ensure the vehicle is securely lifted and supported before removing the old control arm. Verify that the mounting hole aligns correctly with the vehicle’s frame and suspension components. Torque all fasteners to manufacturer specifications to maintain safety and performance.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 524-311 suspension control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and reliability. While specific warranty details are not provided here, Dorman typically offers limited warranties covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.